op:
	gcc -O2 -g -Wall -I/home/xl10/libpfm/examples_v2.x/x86/../../include -c ibsop.bak.c
	gcc -o ibsop -O2 -g -Wall ibsop.bak.o /home/xl10/libpfm/examples_v2.x/x86/../../lib/libpfm.a -lm -lpthread
